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    justify-content: center;
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      padding: 20px 0px 20px 32px;
      height: 30px;
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      transition: all 1s;
      margin-top: 30px;

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    #m2q0lja4c6ku00000000 #first:hover{
       height: 450px;

    }

    .changeH{
      height: auto!important;
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    #m2q0lja4c6ku00000000 #sign {
      width: 20px;
      height: 20px;
      position: absolute;
      left: 6px;
      top: 27px;
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    #m2q0lja4c6ku00000000 .tit {
      font-size: 16px;
      font-weight: bold;
      margin-top: 5px;
    }

    #m2q0lja4c6ku00000000 .con {
      margin-top: 20px;
      font-size: 14px;
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    #bot{
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      height: 200px;
      background-color: red;
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<body>
  <div id="m2q0lja4c6ku00000000">
    <div id="faqs">
      <div id="first">
        <img id="sign" src="https://img.xiaohucloud.com/res/100510/2021/04/29/100510-hEdePw.png" alt="" />
        <div id="text">
          <p class="tit">1. Why the battery pack cannot be charged?</p>
          <p class="con">Could be divided into the following reasons:

            A.the charger is connected reversely or faulty

            B.The board protection is not restored or fails

            C.the battery pack and the electrical appliance are externally disconnected.

            Suggestions: check in turns, whether the charger is connected reversely, or the positive and negative plugs
            of the battery pack are connected reversely; re-enable the electrical appliances to release the protection
            board, measure whether the protection board MOS tube has driving voltage; check whether the wiring
            connection is loose or broken.</p>
        </div>
      </div>

      <div id="first">
        <img id="sign" src="https://img.xiaohucloud.com/res/100510/2021/04/29/100510-hEdePw.png" alt="" />
        <div id="text">
          <p class="tit">1. Why the battery pack cannot be charged?</p>
          <p class="con">Could be divided into the following reasons:

            A.the charger is connected reversely or faulty

            B.The board protection is not restored or fails

            C.the battery pack and the electrical appliance are externally disconnected.

            Suggestions: check in turns, whether the charger is connected reversely, or the positive and negative plugs
            of the battery pack are connected reversely; re-enable the electrical appliances to release the protection
            board, measure whether the protection board MOS tube has driving voltage; check whether the wiring
            connection is loose or broken.</p>
        </div>
      </div>
    </div>
  </div>

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